glaciation


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glaciation

one of the so-called ice ages; a period of ice cover.
References in periodicals archive ?
While predation is common amongst plankton in modern oceans, the discovery that it was so prominent 635 million years ago, exactly after the Snowball Earth glaciation, is a big deal for the science community.
Comparison was made between arsenic concentrations and bedrock materials directly beneath the sample location, without consideration of depth to bedrock or possible material transport via glaciation or other mechanisms.
General Features of Deep Sedimentary Basins and Impact of Glaciation Cycles on the Groundwater System
They discovered that "the composition of the sediment gave clear evidence of when the glaciation started and then expanded, in sync with global climate trends," explains study coauthor Alan Mix of Oregon State University, which allowed the researchers to accurately determine ages of the sediment sequences.
However, 2.6 million years ago the Earth experienced a shift to a colder climate and glaciation intensified.
The only times it was cooler were those of intense glaciation where ice sheets covered far more of the Earth's surface than they do today.
Recognition of glaciation events is complex, and the findings of a facies association study by Clayer and Desrochers regard the stratigraphic imprint of a mid-Telychian (Llandovery, Early Silurian) glaciation on far-field shallow-water carbonates on Anticosti Island, Eastern Canada.
The researchers from University of New Hampshire has shown that the most likely explanation for the initiation of Antarctic glaciation during a major climate shift 34 million years ago.
Evidence for glaciation on Dartmoor (Field day, Dartmoor)
Conclusions from records are explained by what can be gleaned of contemporary geochemistry, and interactions of greenhouse gases, ocean salinity, glaciation, and biological respiration are continually clarified as the mechanisms recur throughout the book.
These boulders have occasionally been left by the last glaciation ("ice age", which started its long retreat 12,000 years ago.
"It has to prevent this material getting out even if Britain is hit by another ice age glaciation.